[tor-bugs] #19460 [Core Tor/Tor]: Improve consensus handling of clients with skewed clocks

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#19460: Improve consensus handling of clients with skewed clocks
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:  (none)
     Type:  enhancement                          |         Status:  new
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-client timekeeping clock-skew    |  Actual Points:
  consensus                                      |
Parent ID:                                       |         Points:  2
 Reviewer:                                       |        Sponsor:
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Comment (by cypherpunks):

 A side note:
 TBB (Tor 0.3.2.10) on a 1:40:00 lag machine says "Tor requires an accurate
 clock to work" for 4 hours, but then
 {{{
 Tor NOTICE: No circuits are opened. Relaxed timeout for circuit 4215 (a
 General-purpose client 1-hop circuit in state doing handshakes with
 channel state open) to 60000ms. However, it appears the circuit has timed
 out anyway.
 Tor NOTICE: We now have enough directory information to build circuits.
 Tor NOTICE: Tor has successfully opened a circuit. Looks like client
 functionality is working.
 }}}
 Secure sites are working, but is it secure to use TBB in that state?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19460#comment:6>
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